Mg69Ni15Gd10Ag6非晶合金对甲基紫的光催化降解性能  

Investigation on Photocatalytic Degradation Properties of Mg69Ni15Gd10Ag6 Amorphous Alloy to wards Methyl Violet

作　　者：赵洋强 张琦[2] 汤彬[2] 王海燕[3] 姚启明[2] 李睿[2] 徐江波 王佐[2] 范晋平[1] 李双寿[2] ZHAO Yangqiang;ZHANG Qi;TANG Bin;WANG Haiyan;YAO Qiming;LI Rui;XU Jiangbo;WANG Zuo;FAN Jinping;LI Shuangshou(College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Fundamental Industry Training Center,Tsinghua University,Beijing 100084,China;Key Laboratory of Green Printing,Institute of Chemistry of Chinese Academy of Sciences(ICCAS),Beijing 100190,China)

机构地区：[1]太原理工大学材料科学与工程学院,太原030024 [2]清华大学基础工业训练中心,北京100084 [3]中国科学院化学研究所绿色印刷院重点实验室,北京100190

出　　处：《太原理工大学学报》2019年第5期556-561,共6页Journal of Taiyuan University of Technology

基　　金：太原理工大学技术开发项目(RH19200007)

摘　　要：为研究Mg69Ni15Gd10Ag6非晶合金对甲基紫染料的光催化降解性能的影响,采用紫外-可见光谱法测定光催化降解过程中甲基紫染料的浓度变化,采用XRD和SEM分析晶体合金与非晶合金在光催化降解反应前后的结构和微观形貌的变化。结果表明:与晶体合金对甲基紫染料的光催化降解效果相比,非晶合金具有稳定、高效的特点。非晶合金在降解10 min时就达到97.6%的光催化降解率,并且在30 min时达到99.1%的光催化降解率;而晶体合金在10 min时仅能达到63.3%的光催化降解率,在光催化降解时间为30 min时,仅达到74.5%的光催化降解率。Mg69Ni15Gd10Ag6非晶合金对甲基紫染料的光催化降解过程为:中心碳原子发生羟基化反应,C=C键断裂生成二苯甲酮。In order to study the effect of Mg 69 Ni 15 Gd 10 Ag 6 amorphous alloy on the photocatalytic degradation efficiency of methyl violet dye,UV-visible spectroscopy was were used to calculate the concentration variation during the photocatalytic degradation process.XRD and SEM were used to analyze the structural and morphological variation of crystal alloys and amorphous alloys before and after the photocatalytic degradation reaction,respectively.The results show that amorphous alloys exhibited higher efficiency for photocatalytic degradation of methyl violet dye than crystal alloy.The photocatalytic degradation efficiency of amorphous alloys reached 97.6%and 99.1%in 10 and 30 min respectively,while crystal alloys reached 63.3%and 74.5%in 10 and 30 min respectively.Thie superior photocatalytic degradation properties of Mg 69 Ni 15 Gd 10 Ag 6 amorphous alloys revealed a great potential for wastewater treatment.The photocatalytic degradation process of Mg 69 Ni 15 Gd 10 Ag 6 amorphous alloy to wards methyl violet dye is that the hydroxylation of central carbon atom occurs at first,and then the carbon-carbon bond of the central carbon atom breaks to form benzophenone.

关 键 词：Mg69Ni15 Gd10Ag 6 非晶合金 甲基紫 光催化降解 机理 

分 类 号：TG139[一般工业技术—材料科学与工程]